S71926 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71926 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71926 ACDGA/HCP4A is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with ceramic balls and manufactured to P4A super-precision tolerance, this bearing excels in applications involving combined loads (radial and bidirectional axial loads). Its compact design, featuring a 24mm width on a 130mm bore, provides a high stiffness-to-size ratio. The combination of phenolic cage, premium grease lubrication, and sealed construction ensures reliable high-speed performance up to 11,000 rpm and long service life in challenging environments.
S71926 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-precision angular contact bearing series |
| 1926 | Size designation: 130mm bore, 180mm OD |
| ACD | 25° contact angle, double row design |
| GA | Extra light preload (Class A) |
| HC | Hybrid ceramic balls |
| P4A | Super precision tolerance class (equivalent to ABEC 7) |
S71926 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact configuration provides superior stiffness and can accommodate significant combined radial and axial loads in both directions. With a 25° contact angle and 27 ceramic balls, it offers a radial dynamic load rating of 19,598 lbf and static rating of 22,950 lbf.
Enhanced High-Speed Performance: The phenolic resin cage ensures optimal performance at high rotational speeds, contributing to the bearing's 11,000 rpm limiting speed. The hybrid ceramic construction (steel rings with ceramic balls) reduces centrifugal forces, minimizes heat generation, and extends service life.
Precision & Thermal Stability: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy. The phenolic cage provides excellent dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be supplied in matched sets of 4 for precise preload arrangements in spindle applications, ensuring optimal system performance.
S71926 ACDGA/HCP4A Bearing Typical Application Areas
- Machine tool spindles for high-precision machining centers
- High-speed machining spindles requiring superior rigidity and accuracy
- Precision grinding spindles where thermal stability is critical
- Medical equipment such as dental handpieces and surgical tools
- Aerospace components requiring reliable high-speed operation
- Robotic systems and automation equipment
